After much inspiration from people like fryslayer and others who have made brikwars, I built my own. It is mainly a face off between a mage and the Dragon Masters. In it are a few misspelled words like on one it says not when it means now . So please forgive me. And here i present my first photoed brikwar.
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=259573

Also slowly add up the number of troops involved until you get a nice gaming experience/time used ratio. You might also want to consider using point system or a simple rationing of melee to ranged troops at 2:1 or else so much arrows will be flying no body would want to come out from cover

I was thinking of using boxes, but I couldn't find any that weren't being used for something else. The follage thing I agree with, both of us complietly forgot about the trees, and then remembered them half way through the game, so it was a little late. Oh well, thanks for the tips.